pMorse Roughing End Mill, Center Cutting MediumLong Length, Series 4612, 12 in Cutter Dia, 4 in Overall Length, 2 in Maximum Depth of Cut, 4 Flutes, Coarse Pitch Flute, 12 in Shank Dia, Right Hand Cutting, 30 deg Helix Angle, RoundWeldon Flat Shank, Cobalt 8M42 HSS, Brightp.